如何在C＃中针对DTD验证XML文档？ [英] How do I validate an XML document against a DTD in C#?

问题描述

我不想做任何花哨的事情，我只想确保文档有效，如果无效，则打印错误消息。 Google向我指出了此，但是XmlValidatingReader似乎已经过时了（至少，MonoDevelop告诉了我）我）。

I don't want to do anything fancy, I just want to make sure a document is valid, and print an error message if it is not. Google pointed me to this, but it seems XmlValidatingReader is obsolete (at least, that's what MonoDevelop tells me).

编辑：我正在尝试Mehrdad的小费，但遇到了麻烦。我想我已经掌握了大部分，但是我找不到任何地方的OnValidationEvent。我从哪里获得OnValidationEvent？

I'm trying Mehrdad's tip, but I'm having trouble. I think I've got most of it, but I can't find OnValidationEvent anywhere. Where go I get OnValidationEvent from?

XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.DTD;
settings.ValidationEventHandler += new ValidationEventHandler(/*trouble is here*/);
XmlReader validatingReader = XmlReader.Create(fileToLoad, settings);

推荐答案

而不是创建 XmlValidatingReader 类，您应该构造适当的 XmlReaderSettings 对象，并将其作为参数传递给 XmlReader.Create 方法：

Instead of creating XmlValidatingReader class directly, you should construct an appropriate XmlReaderSettings object and pass it as an argument to the XmlReader.Create method:

var settings = new XmlReaderSettings { ValidationType = ValidationType.DTD };
settings.ValidationEventHandler += new ValidationEventHandler(OnValidationEvent);
var reader = XmlReader.Create("file.xml", settings);

其余部分保持不变。

P.S。 OnValidationEvent 是您声明的用于处理验证事件的方法的名称。显然，如果您不想订阅 XmlReader 引发的验证事件，则可以删除该行。

P.S. OnValidationEvent is the name of the method you declare to handle validation events. Obviously, you can remove the line if you don't want to subscribe to validation events raised by the XmlReader.

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